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The Needs and Provision Complexity Scale: a first psychometric analysis using multicentre data.

Richard J Siegert1, Diana M Jackson2, Lynne Turner-Stokes3

  • 1Department of Palliative Care Policy and Rehabilitation, King's College London, School of Medicine, London, UK Person-Centred Research Centre, School of Public Health and Psychosocial Studies and School of Rehabilitation and Occupational Studies, AUT University, Auckland, New Zealand richard.siegert@aut.ac.nz.

Clinical Rehabilitation
|January 24, 2014
PubMed
Summary

The Needs and Provision Complexity Scale (NPCS) effectively assesses health and social support needs and services. It demonstrates good internal consistency, reliability, and validity for neurorehabilitation patients.

Keywords:
Needs and Provision Complexity ScaleRehabilitationneurological disorderspsychometryquestionnaire

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Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Health Services Research

Background:

  • Assessing patient needs and the complexity of provided support is crucial in neurorehabilitation.
  • The Needs and Provision Complexity Scale (NPCS) was developed to evaluate both patient needs and the services received.
  • Understanding the psychometric properties of the NPCS is essential for its reliable application.

Purpose of the Study:

  • To conduct a psychometric evaluation of the Needs and Provision Complexity Scale (NPCS).
  • To assess the scale's internal consistency, test-retest reliability, and concurrent validity.
  • To determine the factor structure of the NPCS for both needs and provision components.

Main Methods:

  • A cohort of 428 neurorehabilitation patients from nine London units were assessed.
  • The NPCS-Needs was completed by the clinical team at discharge; NPCS-Gets was reported by 212 patients after six months.
  • Factor analysis, reliability testing (Cronbach's alpha, ICC), and concurrent validity correlations were performed.

Main Results:

  • Factor analysis revealed a robust two-factor structure ('Health and personal care', 'Social care and support') explaining 66% of variance.
  • High internal consistency (alpha = 0.94) and acceptable test-retest reliability (ICC range: 0.65-0.84) were found.
  • Initial evidence of concurrent validity was demonstrated through correlations with dependency and community integration measures.

Conclusions:

  • The NPCS demonstrates good psychometric properties, including strong internal consistency and a reliable two-factor structure.
  • Despite a 50% response rate for the NPCS-Gets at six months, the scale shows acceptable reliability and initial validity.
  • The NPCS is a valuable tool for evaluating the complexity of needs and provision in neurorehabilitation settings.